diff --git a/ui/ui-frontend/projects/referential/src/app/management-contract/management-contract-create/management-contract-create.component.ts b/ui/ui-frontend/projects/referential/src/app/management-contract/management-contract-create/management-contract-create.component.ts
index e9fa07feab8..8c79476545e 100644
--- a/ui/ui-frontend/projects/referential/src/app/management-contract/management-contract-create/management-contract-create.component.ts
+++ b/ui/ui-frontend/projects/referential/src/app/management-contract/management-contract-create/management-contract-create.component.ts
@@ -108,7 +108,7 @@ export class ManagementContractCreateComponent implements OnInit, OnDestroy {
         persistentIdentifierPolicyType: [null, Validators.required],
         persistentIdentifierUnit: [false],
         persistentIdentifierObject: [false],
-        persistentIdentifierAuthority: ['', [Validators.required, Validators.pattern('^[0-9]{5,9}$')]],
+        persistentIdentifierAuthority: ['', [Validators.required, Validators.pattern('^([0-9]{5}|[0-9]{9})$')]],
         persistentIdentifierUsages: this.formBuilder.array([this.createUsageFormGroup()]),
       }),
     });
diff --git a/ui/ui-frontend/projects/referential/src/app/management-contract/management-contract-preview/management-contract-identification-tab/management-contract-identification-tab.component.ts b/ui/ui-frontend/projects/referential/src/app/management-contract/management-contract-preview/management-contract-identification-tab/management-contract-identification-tab.component.ts
index 12641331d29..88e33f2702d 100644
--- a/ui/ui-frontend/projects/referential/src/app/management-contract/management-contract-preview/management-contract-identification-tab/management-contract-identification-tab.component.ts
+++ b/ui/ui-frontend/projects/referential/src/app/management-contract/management-contract-preview/management-contract-identification-tab/management-contract-identification-tab.component.ts
@@ -70,7 +70,7 @@ export class ManagementContractIdentificationTabComponent implements OnChanges {
   private buildPolicyGroup(policy: PersistentIdentifierPolicy): FormGroup {
     return this.formBuilder.group({
       policyTypeOption: [policy.persistentIdentifierPolicyType],
-      authority: [policy.persistentIdentifierAuthority, [Validators.required, Validators.pattern('^[0-9]{5,9}$')]],
+      authority: [policy.persistentIdentifierAuthority, [Validators.required, Validators.pattern('^([0-9]{5}|[0-9]{9})$')]],
       shouldConcernArchiveUnits: [policy.persistentIdentifierUnit],
       shouldConcernObjects: [Boolean(policy.persistentIdentifierUsages.length)],
       objectUsagePolicies: this.formBuilder.array(